S-92186A807 5/8"-11 x 3 1/4" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction, ideal for marine, chemical, and outdoor applications.
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads, reducing the risk of fastener failure.
• Coarse UNC threading (5/8"-11) provides faster installation and better resistance to vibration loosening compared to fine threads.
• External hex drive and hex head design allows for high torque application with standard tools, simplifying assembly and disassembly.
• Class 2A thread fit offers consistent, free-spinning assembly with standard nuts, improving installation efficiency.
• Partial threading provides an unthreaded shank for precise clamping in structured connections.
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees product reliability and environmental safety for global industrial use.

Professional Applications & Engineering Value

This 5/8"-11 UNC hex head screw in 316 stainless steel is engineered to solve critical challenges in demanding industrial applications. Its coarse thread design ensures rapid installation and superior grip in materials where vibration resistance is paramount, such as in heavy machinery, structural steel frameworks, and marine equipment. The external hex drive facilitates high-torque tightening with common wrenches, reducing assembly time and labor costs. The partially threaded shank offers a non-threaded bearing surface, which helps distribute load more evenly and prevents joint slippage. Combined with a Rockwell B70 hardness and robust 70,000 psi tensile strength, this screw delivers long-term durability and reliability, minimizing maintenance needs and downtime in corrosive or high-stress environments.

Specification Summary & Compliance

This hex head screw adheres to precise dimensional and performance standards, including Class 2A thread fit for consistent assembly and UNC coarse threading (5/8"-11). It is manufactured in accordance with ASME B18.2.1 specifications, ensuring interchangeability and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in regulated industries without hazardous substances.